package com.qumall.boot.security;

import com.qumall.boot.common.filter.TokenFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;

@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    AuthenticationEntryPointImpl unauthorizedHandler;
    @Autowired
    LogoutSuccessHandlerImpl logoutSuccessHandler;
    @Autowired
    CorsFilter corsFilter;

    /**
     * 自定义用户认证逻辑
     */
    @Autowired
    private UserDetailsService userDetailsService;

    /**
     * anyRequest          |   匹配所有请求路径
     * access              |   SpringEl表达式结果为true时可以访问
     * anonymous           |   匿名可以访问
     * denyAll             |   用户不能访问
     * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
     * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
     * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
     * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
     * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
     * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
     * permitAll           |   用户可以任意访问
     * rememberMe          |   允许通过remember-me登录的用户访问
     * authenticated       |   用户登录后可访问
     */
    @Override
    protected void configure(HttpSecurity httpSecurity) throws Exception {
        httpSecurity
                // CSRF禁用，因为不使用session
                .csrf().disable()
                // 认证失败处理类
                .exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()
                // 基于token，所以不需要session
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
                // 过滤请求
                .authorizeRequests()
                // 对于登录login 注册register 允许匿名访问，也可以在下面直接 ignore掉
//                .antMatchers("/login", "/register", "/health").anonymous()
                // 静态资源，可匿名访问
//                .antMatchers(HttpMethod.GET, "/", "/favicon.ico", "/*.html", "/**/*.html", "/**/*.css", "/**/*.js", "/profile/**").permitAll()
//                .antMatchers("/swagger-ui/**", "/swagger-resources/**", "/webjars/**", "/*/api-docs", "/druid/**").permitAll()
                // 除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated();
        // UsernamePasswordAuthenticationFilter添加到Token filter前面
        httpSecurity.addFilterBefore(new TokenFilter(), UsernamePasswordAuthenticationFilter.class);
        // TokenFilter 添加CORS filter前面
        httpSecurity.addFilterBefore(corsFilter, TokenFilter.class);
        // 添加Logout filter
        httpSecurity.logout().logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler);
        // LogoutFilter 添加CORS filter前面
        httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);
    }

    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder() {
        return new BCryptPasswordEncoder();
    }

    // 忽略下面的接口，不进行权限验证
    @Override
    public void configure(WebSecurity web) {
        web.ignoring().antMatchers("/health", "/session/**")
                .antMatchers("/", "/favicon.ico", "/*.html", "/**/*.html", "/**/*.css", "/**/*.js", "/profile/**")
                .antMatchers("/swagger-ui/**", "/swagger-resources/**", "/webjars/**", "/*/api-docs");
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder());
    }

    /**
     * 解决 无法直接注入 AuthenticationManager
     *
     * @return
     * @throws Exception
     */
    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }
}
